Improvement in drawing or forging metal bars



UNITED STATES PATENT OFFICEo i, IMPROVEMENT IN DRAWING OR FORGING METAL BARS,

Specification forming part of Letters Patent No. 38,090, dated April 7, 1863.

To all whom it may concern:

Be it known that I, WILLIAM BEACH, of the city of Philadelphia, in the State of Pennsylvania, have invented a new and useful Improvement in Machines for Drawing or Forging Metal Bars 5 and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the aecompanying drawings, making part of this speciiication, in which- Figure l is a perspective view, and Fig. 2 a vertical transverse central section, of the said improved machine, like letters indicating the same parts when in both gures.

The nature of my invention consists in the combination of a balanced revolving hammer with an adjustable anvil, the same being arranged in a suitable supporting frame, so as to operate together substantially in the manner hereinafter described, for the purpose of producing a combined rolling and pounding effect in drawing or forging thereby bars of iron or other metals.

Letters Patent were granted to me for an improvement in rammers for street pave ments, 7 which Letters Patent bear d 18th day of September, 1860, and embrace the balanced revolving hammer used in the present combination; therefore, a minute verbal description of the construction of the said hammer need not be here repeated.

In the drawings, A is the balanced revolving hammer; B, the adjustable anvil, and C the supporting-frame.

The hammer A consists of two like solid iron cylinders, a a', suspended by their axes so that they may rotate between the arms a2 a2, fixed to a shaft, c3, which is supported in a horizontal position in the frame C, so that it may be rotated by any suitable power applied thereto by a pulley and band, or otherwise, and consequently give a revolving motion to the two cylinders a c', as indicated in Fig. 2

The frame C has two uprights, c c, which are supported rmly on a horizontal base, c2, which may be Xed around the mouth of 2 suitable pit, and are provided with bearings in the slots c3 c3 for the hammer-shaft a3, so that the latter may be permitted, While rotat ing, to rise sufficiently to allow the cylinders a a', which it carries, to pass over the metal bars or plates, which may be subjected to their operation should the same be fed too rapidly for the reducing power of the hammer.

The anvil B rests directly upon a horizontallyplaced plate, D, which is supported or suspended by truss-bars d d from the eappiece c4 of the uprights, the said plate D, with the anvil B thereon, being adjustable vertically beneath the hammer A by means of the screw-threads on the upper ends of the truss-bars and the connecting horizontal wheels E E E, the latter being arranged to be rotated together by means of a hand-crank and pinion, or by any other suitable means, so that the said anvil B may be either raised or lowered readily, as the thickness of the bar or plate of metal operated upon may from time to time require, and, in order to lessen the strain upon the truss-bars cl d', which will be caused by the blows of therevolving cylinders of the hammer, a strong lever, F, of the first order, is suspended in a horizontal position within the base-frame c2 or pit, so that its weight end shall rest in contact with the under side of the plate D, while its power end is loaded with a suii'ciently heavy weight, G, to produce the required relieving effect.

In the operation of this machine in forging or drawing metal bars it will be readily perceived when rapid rotary motion is given to the hammer A and a bar of red-hot iron is gradually introduced between it and the anvil B, the latter being first adjusted to the required distance from and the reducing power of the hammer, that a combined pounding and rolling eifect will be produced upon the bar, and consequently greater density given to the same than can be given by simply rolling the metal, and also greater expedition in drawing or extending the same, than can be effected by simply hammering it as heretoore; that the final result will be the produc- ;ion ofbar or plate iron having a medium den sity, compared with the two qualities known, respectively, as hammered and rolled iron, 1nd that the two cylinders a a balancing each ither, the power required to drive the machine will be much less than that required to drive a forge-hummer of equal Weight With the ba-lvil B, the same being constructed, arranged, moed one herein described and set forth. and supported so as to operate together sub- Having thus fully described my improved stantielly in the manner described, for the machine and pointed out its utility, what I purpose specied. claim as new therein, 0f my invention, and de sire to secure by Letters Patent, is-

The combination consisting of the balanced revolving hammer A and the adjustable an- WILLIAM BEACH. Witnesses:

B. F. SHATTUCK,

BENJ. MORRISON. 

